• Silurian of Algeria (3 collections), Argentina (2), Canada (5: Quebec, Québec), China (15), Denmark (7), France (2), Jordan (2), Morocco (2), Paraguay (1), the Russian Federation (1), Saudi Arabia (1), Serbia and Montenegro (5), Sweden (3), Thailand (2), the United Kingdom (7), United States (16: Alaska, Idaho, New York), Western Sahara (1)

• Dobrotivian of France (1), Portugal (1)

• Uhaku of Sweden (1)

• Whiterockian of Canada (4: Newfoundland and Labrador)

• Arenig of China (7)

• Arenigian of United States (1: Alaska)

• Ningkuo of China (11)

• Ordovician to Silurian of Canada (2: Québec), the Russian Federation (1), United States (2: Alaska)

• Ordovician of Argentina (8), Australia (2), Belgium (2), Bolivia (1), Canada (38: New Brunswick, Northwest Territories, Northwest Territories and Yukon, Nunavut, Ontario, Quebec, Québec, Yukon), China (127), the Czech Republic (4), Kazakhstan (4), Latvia (1), Lithuania (2), Malaysia (1), Morocco (1), New Zealand (17), Norway (9), Peru (1), the Russian Federation (22), Spain (1), Sweden (23), Turkey (2), the United Kingdom (4), United States (132: Alaska, Idaho, Iowa, Kentucky, Michigan, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Texas, Virginia), Venezuela (1), Vietnam (1)

• Tremadoc of Canada (2: Yukon)

Total: 512 collections including 772 occurrences